<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
	<script type="text/javascript">
		var a = [{
			"name":"cheng",
			"arr":"1,2,3"
		},{
			"name":"zhan",
			"arr":"1,2,3"
		}]
		a.arr = a.arr?a.arr.split(","):"";
		console.log(a);
		console.log(a.arr);
		for(var i=0;i<a.length;a++){
			
		}
	</script>
</html>
